little-known
🇬🇧/ˈlɪtl nəʊn/ 🇺🇸/ˈlɪtl noʊn/
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13718
not widely known; not famed.
adjective [原级] 鲜为人知的
Biographers are good at discovering little-known facts. 传记作者们善于发掘鲜为人知的事实。